2018-03-06 09:38:27 +00:00
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// Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the
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// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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// Boston, MA 02110-1335, USA.
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use glib;
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use glib::prelude::*;
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use gst;
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use gst::prelude::*;
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use gst_plugin::properties::*;
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use gst_plugin::object::*;
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use gst_plugin::element::*;
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2018-03-08 20:26:34 +00:00
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use std::sync::{Arc, Mutex, Weak};
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2018-03-09 15:32:21 +00:00
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use std::u16;
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2018-03-06 09:38:27 +00:00
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2018-03-09 15:32:21 +00:00
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use futures::{Async, Future, IntoFuture, Poll, Stream};
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2018-03-08 20:26:34 +00:00
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use futures::{future, task};
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use futures::sync::oneshot;
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use tokio::executor::thread_pool;
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use tokio::reactor;
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use tokio::net;
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use std::collections::HashMap;
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2018-03-09 15:32:21 +00:00
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use std::marker::PhantomData;
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2018-03-08 20:26:34 +00:00
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lazy_static!{
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static ref CONTEXTS: Mutex<HashMap<String, Weak<IOContextInner>>> = Mutex::new(HashMap::new());
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static ref CONTEXT_CAT: gst::DebugCategory = gst::DebugCategory::new(
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"ts-context",
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gst::DebugColorFlags::empty(),
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"Thread-sharing Context",
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);
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static ref SOCKET_CAT: gst::DebugCategory = gst::DebugCategory::new(
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"ts-socket",
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gst::DebugColorFlags::empty(),
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"Thread-sharing Socket",
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);
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}
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#[derive(Clone)]
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struct IOContext(Arc<IOContextInner>);
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struct IOContextInner {
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name: String,
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reactor: reactor::Background,
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pool: thread_pool::ThreadPool,
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}
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impl Drop for IOContextInner {
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fn drop(&mut self) {
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let mut contexts = CONTEXTS.lock().unwrap();
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gst_debug!(CONTEXT_CAT, "Finalizing context '{}'", self.name);
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contexts.remove(&self.name);
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}
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}
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impl IOContext {
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fn new(name: &str, n_threads: usize) -> Self {
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let mut contexts = CONTEXTS.lock().unwrap();
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if let Some(context) = contexts.get(name) {
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if let Some(context) = context.upgrade() {
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gst_debug!(CONTEXT_CAT, "Reusing existing context '{}'", name);
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return IOContext(context);
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}
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}
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let reactor = reactor::Reactor::new().unwrap().background().unwrap();
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let handle = reactor.handle().clone();
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let mut pool_builder = thread_pool::Builder::new();
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pool_builder.around_worker(move |w, enter| {
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::tokio_reactor::with_default(&handle, enter, |_| {
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w.run();
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});
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});
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if n_threads > 0 {
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pool_builder.pool_size(n_threads);
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}
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let pool = pool_builder.build();
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let context = Arc::new(IOContextInner {
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name: name.into(),
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reactor,
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pool,
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});
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contexts.insert(name.into(), Arc::downgrade(&context));
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gst_debug!(CONTEXT_CAT, "Created new context '{}'", name);
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IOContext(context)
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}
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fn spawn<F>(&self, future: F)
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where
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F: Future<Item = (), Error = ()> + Send + 'static,
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{
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self.0.pool.spawn(future);
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}
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}
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2018-03-09 15:32:21 +00:00
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/* Workaround for https://github.com/tokio-rs/tokio/issues/207 */
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struct YieldOnce<E>(Option<()>, PhantomData<E>);
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impl<E> YieldOnce<E> {
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fn new() -> YieldOnce<E> {
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YieldOnce(None, PhantomData)
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}
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}
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impl<E> Future for YieldOnce<E> {
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type Item = ();
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type Error = E;
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fn poll(&mut self) -> Poll<(), E> {
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if let Some(_) = self.0.take() {
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Ok(Async::Ready(()))
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} else {
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self.0 = Some(());
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task::current().notify();
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Ok(Async::NotReady)
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}
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}
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}
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2018-03-08 20:26:34 +00:00
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#[derive(Clone)]
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struct Socket(Arc<Mutex<SocketInner>>);
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#[derive(PartialEq, Eq, Debug)]
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enum SocketState {
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Unscheduled,
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Scheduled,
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Running,
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Shutdown,
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}
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struct SocketInner {
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element: Element,
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state: SocketState,
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socket: net::UdpSocket,
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buffer_pool: gst::BufferPool,
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current_task: Option<task::Task>,
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shutdown_receiver: Option<oneshot::Receiver<()>>,
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clock: Option<gst::Clock>,
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base_time: Option<gst::ClockTime>,
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}
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impl Socket {
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fn new(element: &Element, socket: net::UdpSocket, buffer_pool: gst::BufferPool) -> Self {
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Socket(Arc::new(Mutex::new(SocketInner {
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element: element.clone(),
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state: SocketState::Unscheduled,
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socket: socket,
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buffer_pool: buffer_pool,
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current_task: None,
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shutdown_receiver: None,
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clock: None,
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base_time: None,
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})))
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}
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2018-03-09 15:32:21 +00:00
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fn schedule<F: Fn(gst::Buffer) -> Result<(), gst::FlowError> + Send + 'static>(
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2018-03-08 20:26:34 +00:00
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&self,
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io_context: &IOContext,
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func: F,
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) {
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// Ready->Paused
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//
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// Need to wait for a possible shutdown to finish first
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// spawn() on the reactor, change state to Scheduled
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let stream = SocketStream(self.clone(), None);
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let mut inner = self.0.lock().unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Scheduling socket");
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if inner.state == SocketState::Scheduled {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket already scheduled");
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return;
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}
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assert_eq!(inner.state, SocketState::Unscheduled);
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inner.state = SocketState::Scheduled;
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inner.buffer_pool.set_active(true).unwrap();
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let (sender, receiver) = oneshot::channel::<()>();
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inner.shutdown_receiver = Some(receiver);
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let element_clone = inner.element.clone();
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2018-03-09 15:32:21 +00:00
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io_context.spawn(
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stream
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.for_each(move |buffer| {
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let res = func(buffer);
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match res {
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Ok(()) => future::Either::A(YieldOnce::new()),
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Err(err) => future::Either::B(Err(err).into_future()),
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}
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})
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.then(move |res| {
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gst_debug!(SOCKET_CAT, obj: &element_clone, "Socket finished {:?}", res);
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// TODO: Do something with errors here?
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let _ = sender.send(());
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Ok(())
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}),
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);
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2018-03-08 20:26:34 +00:00
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}
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fn unpause(&self, clock: gst::Clock, base_time: gst::ClockTime) {
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// Paused->Playing
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//
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// Change state to Running and signal task
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let mut inner = self.0.lock().unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Unpausing socket");
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if inner.state == SocketState::Running {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket already unpaused");
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return;
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}
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assert_eq!(inner.state, SocketState::Scheduled);
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inner.state = SocketState::Running;
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inner.clock = Some(clock);
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inner.base_time = Some(base_time);
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if let Some(task) = inner.current_task.take() {
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task.notify();
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}
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}
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fn pause(&self) {
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// Playing->Paused
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//
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// Change state to Scheduled and signal task
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let mut inner = self.0.lock().unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Pausing socket");
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if inner.state == SocketState::Scheduled {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket already paused");
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return;
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}
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assert_eq!(inner.state, SocketState::Running);
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inner.state = SocketState::Scheduled;
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inner.clock = None;
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inner.base_time = None;
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if let Some(task) = inner.current_task.take() {
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task.notify();
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}
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}
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fn shutdown(&self) {
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// Paused->Ready
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//
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// Change state to Shutdown and signal task, wait for our future to be finished
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// Requires scheduled function to be unblocked! Pad must be deactivated before
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let mut inner = self.0.lock().unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Shutting down socket");
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if inner.state == SocketState::Unscheduled {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket already shut down");
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return;
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}
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assert!(inner.state == SocketState::Scheduled || inner.state == SocketState::Running);
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inner.state = SocketState::Shutdown;
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if let Some(task) = inner.current_task.take() {
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task.notify();
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}
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let shutdown_receiver = inner.shutdown_receiver.take().unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Waiting for socket to shut down");
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drop(inner);
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shutdown_receiver.wait().unwrap();
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let mut inner = self.0.lock().unwrap();
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inner.state = SocketState::Unscheduled;
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inner.buffer_pool.set_active(false).unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket shut down");
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}
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}
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impl Drop for SocketInner {
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fn drop(&mut self) {
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assert_eq!(self.state, SocketState::Unscheduled);
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}
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}
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struct SocketStream(Socket, Option<gst::MappedBuffer<gst::buffer::Writable>>);
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impl Stream for SocketStream {
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type Item = gst::Buffer;
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type Error = gst::FlowError;
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fn poll(&mut self) -> Poll<Option<Self::Item>, Self::Error> {
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let mut inner = (self.0).0.lock().unwrap();
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if inner.state == SocketState::Shutdown {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket shutting down");
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return Ok(Async::Ready(None));
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} else if inner.state == SocketState::Scheduled {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Socket not running");
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inner.current_task = Some(task::current());
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return Ok(Async::NotReady);
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}
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assert_ne!(inner.state, SocketState::Unscheduled);
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Trying to read data");
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let (len, time) = {
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let mut buffer = match self.1 {
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Some(ref mut buffer) => buffer,
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None => match inner.buffer_pool.acquire_buffer(None) {
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Ok(buffer) => {
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self.1 = Some(buffer.into_mapped_buffer_writable().unwrap());
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self.1.as_mut().unwrap()
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}
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Err(err) => {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Failed to acquire buffer {:?}", err);
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return Err(err.into_result().unwrap_err());
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}
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},
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};
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match inner.socket.poll_recv(buffer.as_mut_slice()) {
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Ok(Async::NotReady) => {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "No data available");
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inner.current_task = Some(task::current());
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return Ok(Async::NotReady);
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}
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Err(err) => {
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Read error {:?}", err);
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return Err(gst::FlowError::Error);
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}
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Ok(Async::Ready(len)) => {
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let time = inner.clock.as_ref().unwrap().get_time();
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let dts = time - inner.base_time.unwrap();
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gst_debug!(SOCKET_CAT, obj: &inner.element, "Read {} bytes at {} (clock {})", len, dts, time);
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(len, dts)
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}
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}
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};
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let mut buffer = self.1.take().unwrap().into_buffer();
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{
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let buffer = buffer.get_mut().unwrap();
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if len < buffer.get_size() {
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buffer.set_size(len);
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}
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buffer.set_dts(time);
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}
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Ok(Async::Ready(Some(buffer)))
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}
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}
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const DEFAULT_ADDRESS: Option<&'static str> = Some("127.0.0.1");
|
|
|
|
const DEFAULT_PORT: u32 = 5000;
|
|
|
|
const DEFAULT_CAPS: Option<gst::Caps> = None;
|
|
|
|
const DEFAULT_MTU: u32 = 1500;
|
|
|
|
const DEFAULT_CONTEXT: &'static str = "";
|
|
|
|
const DEFAULT_CONTEXT_THREADS: u32 = 0;
|
|
|
|
|
|
|
|
#[derive(Debug, Clone)]
|
|
|
|
struct Settings {
|
|
|
|
address: Option<String>,
|
|
|
|
port: u32,
|
|
|
|
caps: Option<gst::Caps>,
|
|
|
|
mtu: u32,
|
|
|
|
context: String,
|
|
|
|
context_threads: u32,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for Settings {
|
|
|
|
fn default() -> Self {
|
|
|
|
Settings {
|
|
|
|
address: DEFAULT_ADDRESS.map(Into::into),
|
|
|
|
port: DEFAULT_PORT,
|
|
|
|
caps: DEFAULT_CAPS,
|
|
|
|
mtu: DEFAULT_MTU,
|
|
|
|
context: DEFAULT_CONTEXT.into(),
|
|
|
|
context_threads: DEFAULT_CONTEXT_THREADS,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static PROPERTIES: [Property; 6] = [
|
|
|
|
Property::String(
|
|
|
|
"address",
|
|
|
|
"Address",
|
|
|
|
"Address/multicast group to listen on",
|
|
|
|
DEFAULT_ADDRESS,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::UInt(
|
|
|
|
"port",
|
|
|
|
"Port",
|
|
|
|
"Port to listen on",
|
|
|
|
(0, u16::MAX as u32),
|
|
|
|
DEFAULT_PORT,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::Boxed(
|
|
|
|
"caps",
|
|
|
|
"Caps",
|
|
|
|
"Caps to use",
|
|
|
|
gst::Caps::static_type,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::UInt(
|
|
|
|
"mtu",
|
|
|
|
"MTU",
|
|
|
|
"MTU",
|
|
|
|
(0, u16::MAX as u32),
|
|
|
|
DEFAULT_MTU,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::String(
|
|
|
|
"context",
|
|
|
|
"Context",
|
|
|
|
"Context name to share threads with",
|
|
|
|
Some(DEFAULT_CONTEXT),
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
Property::UInt(
|
|
|
|
"context-threads",
|
|
|
|
"Context Threads",
|
|
|
|
"Number of threads for the context thread-pool if we create it",
|
|
|
|
(0, u16::MAX as u32),
|
|
|
|
DEFAULT_CONTEXT_THREADS,
|
|
|
|
PropertyMutability::ReadWrite,
|
|
|
|
),
|
|
|
|
];
|
|
|
|
|
2018-03-06 09:38:27 +00:00
|
|
|
struct State {
|
2018-03-08 20:26:34 +00:00
|
|
|
io_context: Option<IOContext>,
|
|
|
|
socket: Option<Socket>,
|
|
|
|
need_initial_events: bool,
|
2018-03-06 09:38:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for State {
|
|
|
|
fn default() -> State {
|
2018-03-08 20:26:34 +00:00
|
|
|
State {
|
|
|
|
io_context: None,
|
|
|
|
socket: None,
|
|
|
|
need_initial_events: true,
|
|
|
|
}
|
2018-03-06 09:38:27 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
struct UdpSrc {
|
|
|
|
cat: gst::DebugCategory,
|
|
|
|
src_pad: gst::Pad,
|
|
|
|
state: Mutex<State>,
|
2018-03-08 20:26:34 +00:00
|
|
|
settings: Mutex<Settings>,
|
2018-03-06 09:38:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
impl UdpSrc {
|
|
|
|
fn class_init(klass: &mut ElementClass) {
|
|
|
|
klass.set_metadata(
|
|
|
|
"Thread-sharing UDP source",
|
|
|
|
"Source/Network",
|
|
|
|
"Receives data over the network via UDP",
|
|
|
|
"Sebastian Dröge <sebastian@centricular.com>",
|
|
|
|
);
|
|
|
|
|
|
|
|
let caps = gst::Caps::new_any();
|
|
|
|
let src_pad_template = gst::PadTemplate::new(
|
|
|
|
"src",
|
|
|
|
gst::PadDirection::Src,
|
|
|
|
gst::PadPresence::Always,
|
|
|
|
&caps,
|
|
|
|
);
|
|
|
|
klass.add_pad_template(src_pad_template);
|
2018-03-08 20:26:34 +00:00
|
|
|
|
|
|
|
klass.install_properties(&PROPERTIES);
|
2018-03-06 09:38:27 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
fn init(element: &Element) -> Box<ElementImpl<Element>> {
|
|
|
|
let templ = element.get_pad_template("src").unwrap();
|
|
|
|
let src_pad = gst::Pad::new_from_template(&templ, "src");
|
|
|
|
|
|
|
|
src_pad.set_event_function(|pad, parent, event| {
|
|
|
|
UdpSrc::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|udpsrc, element| udpsrc.src_event(pad, element, event),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
src_pad.set_query_function(|pad, parent, query| {
|
|
|
|
UdpSrc::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|udpsrc, element| udpsrc.src_query(pad, element, query),
|
|
|
|
)
|
|
|
|
});
|
|
|
|
element.add_pad(&src_pad).unwrap();
|
|
|
|
|
|
|
|
Box::new(Self {
|
|
|
|
cat: gst::DebugCategory::new(
|
|
|
|
"ts-udpsrc",
|
|
|
|
gst::DebugColorFlags::empty(),
|
|
|
|
"Thread-sharing UDP source",
|
|
|
|
),
|
|
|
|
src_pad: src_pad,
|
2018-03-08 20:26:34 +00:00
|
|
|
state: Mutex::new(State::default()),
|
|
|
|
settings: Mutex::new(Settings::default()),
|
2018-03-06 09:38:27 +00:00
|
|
|
})
|
|
|
|
}
|
|
|
|
|
|
|
|
fn catch_panic_pad_function<T, F: FnOnce(&Self, &Element) -> T, G: FnOnce() -> T>(
|
|
|
|
parent: &Option<gst::Object>,
|
|
|
|
fallback: G,
|
|
|
|
f: F,
|
|
|
|
) -> T {
|
|
|
|
let element = parent
|
|
|
|
.as_ref()
|
|
|
|
.cloned()
|
|
|
|
.unwrap()
|
|
|
|
.downcast::<Element>()
|
|
|
|
.unwrap();
|
|
|
|
let udpsrc = element.get_impl().downcast_ref::<UdpSrc>().unwrap();
|
|
|
|
element.catch_panic(fallback, |element| f(udpsrc, element))
|
|
|
|
}
|
|
|
|
|
|
|
|
fn src_event(&self, pad: &gst::Pad, element: &Element, mut event: gst::Event) -> bool {
|
|
|
|
use gst::EventView;
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling event {:?}", event);
|
|
|
|
|
|
|
|
let mut handled = true;
|
|
|
|
match event.view() {
|
|
|
|
EventView::FlushStart(..) => {}
|
|
|
|
EventView::FlushStop(..) => {}
|
|
|
|
_ => (),
|
|
|
|
}
|
|
|
|
|
|
|
|
if handled {
|
|
|
|
gst_log!(self.cat, obj: pad, "Handled event {:?}", event);
|
|
|
|
pad.event_default(Some(element), event)
|
|
|
|
} else {
|
|
|
|
gst_log!(self.cat, obj: pad, "Didn't handle event {:?}", event);
|
|
|
|
false
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn src_query(&self, pad: &gst::Pad, element: &Element, query: &mut gst::QueryRef) -> bool {
|
|
|
|
use gst::QueryView;
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Handling query {:?}", query);
|
|
|
|
match query.view_mut() {
|
|
|
|
_ => (),
|
|
|
|
};
|
|
|
|
|
|
|
|
gst_log!(self.cat, obj: pad, "Forwarding query {:?}", query);
|
|
|
|
pad.query_default(Some(element), query)
|
|
|
|
}
|
2018-03-08 20:26:34 +00:00
|
|
|
|
|
|
|
fn prepare(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr};
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Preparing");
|
|
|
|
|
|
|
|
let settings = self.settings.lock().unwrap().clone();
|
|
|
|
|
|
|
|
// TODO: Error handling
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
let io_context = IOContext::new(&settings.context, settings.context_threads as usize);
|
|
|
|
|
|
|
|
let addr: IpAddr = match settings.address {
|
|
|
|
None => return Err(()),
|
2018-03-09 15:32:21 +00:00
|
|
|
Some(ref addr) => match addr.parse() {
|
2018-03-08 20:26:34 +00:00
|
|
|
Err(_) => return Err(()),
|
|
|
|
Ok(addr) => addr,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
let port = settings.port;
|
|
|
|
|
|
|
|
// TODO: TTL, multicast loopback, etc
|
|
|
|
let socket = if addr.is_multicast() {
|
|
|
|
// TODO: Use ::unspecified() constructor once stable
|
|
|
|
let bind_addr = if addr.is_ipv4() {
|
|
|
|
IpAddr::V4(Ipv4Addr::new(0, 0, 0, 0))
|
|
|
|
} else {
|
|
|
|
IpAddr::V6(Ipv6Addr::new(0, 0, 0, 0, 0, 0, 0, 0))
|
|
|
|
};
|
|
|
|
|
|
|
|
let saddr = SocketAddr::new(bind_addr, port as u16);
|
|
|
|
gst_debug!(
|
|
|
|
self.cat,
|
|
|
|
obj: element,
|
|
|
|
"Binding to {:?} for multicast group {:?}",
|
|
|
|
saddr,
|
|
|
|
addr
|
|
|
|
);
|
|
|
|
|
|
|
|
let socket = net::UdpSocket::bind(&saddr).unwrap();
|
|
|
|
|
|
|
|
// TODO: Multicast interface configuration, going to be tricky
|
|
|
|
match addr {
|
|
|
|
IpAddr::V4(addr) => {
|
|
|
|
socket
|
|
|
|
.join_multicast_v4(&addr, &Ipv4Addr::new(0, 0, 0, 0))
|
|
|
|
.unwrap();
|
|
|
|
}
|
|
|
|
IpAddr::V6(addr) => {
|
|
|
|
socket.join_multicast_v6(&addr, 0).unwrap();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
socket
|
|
|
|
} else {
|
|
|
|
let saddr = SocketAddr::new(addr, port as u16);
|
|
|
|
gst_debug!(self.cat, obj: element, "Binding to {:?}", saddr);
|
|
|
|
let socket = net::UdpSocket::bind(&saddr).unwrap();
|
|
|
|
|
|
|
|
socket
|
|
|
|
};
|
|
|
|
|
|
|
|
let buffer_pool = gst::BufferPool::new();
|
|
|
|
let mut config = buffer_pool.get_config();
|
|
|
|
config.set_params(None, settings.mtu, 0, 0);
|
|
|
|
buffer_pool.set_config(config).unwrap();
|
|
|
|
|
|
|
|
let socket = Socket::new(element, socket, buffer_pool);
|
|
|
|
|
|
|
|
let element_clone = element.clone();
|
|
|
|
socket.schedule(&io_context, move |buffer| {
|
|
|
|
let udpsrc = element_clone.get_impl().downcast_ref::<UdpSrc>().unwrap();
|
|
|
|
|
|
|
|
let mut state = udpsrc.state.lock().unwrap();
|
|
|
|
if state.need_initial_events {
|
|
|
|
gst_debug!(udpsrc.cat, obj: &element_clone, "Pushing initial events");
|
|
|
|
|
|
|
|
// TODO: Invent a stream id
|
|
|
|
udpsrc
|
|
|
|
.src_pad
|
|
|
|
.push_event(gst::Event::new_stream_start("meh").build());
|
2018-03-09 15:32:21 +00:00
|
|
|
if let Some(ref caps) = settings.caps {
|
2018-03-08 20:26:34 +00:00
|
|
|
udpsrc
|
|
|
|
.src_pad
|
|
|
|
.push_event(gst::Event::new_caps(&caps).build());
|
|
|
|
}
|
2018-03-09 15:32:21 +00:00
|
|
|
udpsrc.src_pad.push_event(
|
|
|
|
gst::Event::new_segment(&gst::FormattedSegment::<gst::format::Time>::new())
|
|
|
|
.build(),
|
|
|
|
);
|
2018-03-08 20:26:34 +00:00
|
|
|
state.need_initial_events = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
// TODO: Error handling
|
|
|
|
udpsrc.src_pad.push(buffer).into_result().unwrap();
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
});
|
|
|
|
|
|
|
|
state.socket = Some(socket);
|
|
|
|
state.io_context = Some(io_context);
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Prepared");
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn unprepare(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Unpreparing");
|
|
|
|
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if let Some(ref socket) = state.socket {
|
|
|
|
socket.shutdown();
|
|
|
|
}
|
|
|
|
|
|
|
|
*state = State::default();
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Unprepared");
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn start(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Starting");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if let Some(ref socket) = state.socket {
|
|
|
|
socket.unpause(element.get_clock().unwrap(), element.get_base_time());
|
|
|
|
}
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Started");
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn stop(&self, element: &Element) -> Result<(), ()> {
|
|
|
|
gst_debug!(self.cat, obj: element, "Stopping");
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if let Some(ref socket) = state.socket {
|
|
|
|
socket.pause();
|
|
|
|
}
|
|
|
|
|
|
|
|
gst_debug!(self.cat, obj: element, "Stopped");
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
2018-03-06 09:38:27 +00:00
|
|
|
}
|
|
|
|
|
2018-03-08 20:26:34 +00:00
|
|
|
impl ObjectImpl<Element> for UdpSrc {
|
|
|
|
fn set_property(&self, _obj: &glib::Object, id: u32, value: &glib::Value) {
|
|
|
|
let prop = &PROPERTIES[id as usize];
|
|
|
|
|
|
|
|
match *prop {
|
|
|
|
Property::String("address", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.address = value.get();
|
|
|
|
}
|
|
|
|
Property::UInt("port", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.port = value.get().unwrap();
|
|
|
|
}
|
|
|
|
Property::Boxed("caps", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.caps = value.get();
|
|
|
|
}
|
|
|
|
Property::UInt("mtu", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.mtu = value.get().unwrap();
|
|
|
|
}
|
|
|
|
Property::String("context", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.context = value.get().unwrap_or_else(|| "".into());
|
|
|
|
}
|
|
|
|
Property::UInt("context-threads", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
settings.context_threads = value.get().unwrap();
|
|
|
|
}
|
|
|
|
_ => unimplemented!(),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn get_property(&self, _obj: &glib::Object, id: u32) -> Result<glib::Value, ()> {
|
|
|
|
let prop = &PROPERTIES[id as usize];
|
|
|
|
|
|
|
|
match *prop {
|
|
|
|
Property::String("address", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.address.to_value())
|
|
|
|
}
|
|
|
|
Property::UInt("port", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.port.to_value())
|
|
|
|
}
|
|
|
|
Property::Boxed("caps", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.caps.to_value())
|
|
|
|
}
|
|
|
|
Property::UInt("mtu", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.mtu.to_value())
|
|
|
|
}
|
|
|
|
Property::String("context", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.context.to_value())
|
|
|
|
}
|
|
|
|
Property::UInt("context-threads", ..) => {
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
|
|
Ok(settings.context_threads.to_value())
|
|
|
|
}
|
|
|
|
_ => unimplemented!(),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2018-03-06 09:38:27 +00:00
|
|
|
|
|
|
|
impl ElementImpl<Element> for UdpSrc {
|
|
|
|
fn change_state(
|
|
|
|
&self,
|
|
|
|
element: &Element,
|
|
|
|
transition: gst::StateChange,
|
|
|
|
) -> gst::StateChangeReturn {
|
|
|
|
gst_trace!(self.cat, obj: element, "Changing state {:?}", transition);
|
|
|
|
|
|
|
|
match transition {
|
2018-03-08 20:26:34 +00:00
|
|
|
gst::StateChange::NullToReady => match self.prepare(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
gst::StateChange::PlayingToPaused => match self.stop(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
gst::StateChange::ReadyToNull => match self.unprepare(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
2018-03-06 09:38:27 +00:00
|
|
|
_ => (),
|
|
|
|
}
|
|
|
|
|
|
|
|
let mut ret = element.parent_change_state(transition);
|
|
|
|
if ret == gst::StateChangeReturn::Failure {
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
match transition {
|
|
|
|
gst::StateChange::ReadyToPaused => {
|
|
|
|
ret = gst::StateChangeReturn::NoPreroll;
|
|
|
|
}
|
2018-03-08 20:26:34 +00:00
|
|
|
gst::StateChange::PausedToPlaying => match self.start(element) {
|
|
|
|
Err(_) => return gst::StateChangeReturn::Failure,
|
|
|
|
Ok(_) => (),
|
|
|
|
},
|
|
|
|
gst::StateChange::PausedToReady => {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
state.need_initial_events = true;
|
|
|
|
}
|
2018-03-06 09:38:27 +00:00
|
|
|
_ => (),
|
|
|
|
}
|
|
|
|
|
|
|
|
ret
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
struct UdpSrcStatic;
|
|
|
|
|
|
|
|
impl ImplTypeStatic<Element> for UdpSrcStatic {
|
|
|
|
fn get_name(&self) -> &str {
|
|
|
|
"UdpSrc"
|
|
|
|
}
|
|
|
|
|
|
|
|
fn new(&self, element: &Element) -> Box<ElementImpl<Element>> {
|
|
|
|
UdpSrc::init(element)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn class_init(&self, klass: &mut ElementClass) {
|
|
|
|
UdpSrc::class_init(klass);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn register(plugin: &gst::Plugin) {
|
|
|
|
let udpsrc_static = UdpSrcStatic;
|
|
|
|
let type_ = register_type(udpsrc_static);
|
|
|
|
gst::Element::register(plugin, "ts-udpsrc", 0, type_);
|
|
|
|
}
|